This month’s report on Google’s autonomous car fleet reveals two new features coming to the company’s prototype car, the ability to honk the horn and a hum similar to most non-electric cars.
The sound of a car horn might be the stuff of nightmares for frequent drivers, but Google believes it can be a powerful tool that may prevent accidents on the road. For the first few months, the car honked internally, but Google recently made the honk audible to nearby cars

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